200440342123 has 12 divisors (see below), whose sum is σ = 235974521160. Its totient is φ = 169736052192.

The previous prime is 200440342087. The next prime is 200440342133. The reversal of 200440342123 is 321243044002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-200440342123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200440342133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24638218 + ... + 24646351.

It is an arithmetic number, because the mean of its divisors is an integer number (19664543430).

Almost surely, 2^200440342123 is an apocalyptic number.

200440342123 is a deficient number, since it is larger than the sum of its proper divisors (35534179037).

200440342123 is an equidigital number, since it uses as much as digits as its factorization.

200440342123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49284666 (or 49284659 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 200440342123 its reverse (321243044002), we get a palindrome (521683386125).

The spelling of 200440342123 in words is "two hundred billion, four hundred forty million, three hundred forty-two thousand, one hundred twenty-three".